Verified answer

It could be 'blind justice':

http://www.charleswebb.com/images/blind-justice.gi...

http://dclips.fundraw.com/zobo500dir/BLDJUST.jpg

but I don't see any scales...

The roses could be many things: stylized flowers for the design, memorial flowers for people lost, he likes roses, tribute to 'old school' tattoos, a million different personal reasons, copy off of something he likes, a band (Guns & Roses http://www.poster.net/guns-n-roses/guns-n-roses-lo... ?) ...... ?????????????????

Unless he tells you, or you find the exact image somewhere else that explains it, who's to know?